Sewing machine with pattern attachment



May 11, 965 w. c. CREMER 3,182,616

SEWING MACHINE WITH PATTERN ATTACHMENT Filed Oct. 11, 1962 s Sheets-Sheet 1 INVENTOR WILLIAM C. CREMER his ATTORNEY May 11, 1965 w. c. CRE-MER 3,182,616

SEWING MACHINE WITH PATTERN ATTACHMENT Filed Oct. 11, 1962 3 Sheets-Sheet 2 his ATTORNEY May 11, 1965 w. c. CREMER SEWING MACHINE WITH PATTERN ATTACHMENT 3 Sheets-Sheet- 3 Filed 001,. 11, 1962 INVENTOR. WILLIAM C. CREMER MS ATTORNEY United States Patent 3,182,616 SEWING MACHINE WITH PATTERN ATTACHMENT William C. Cremer, Reading, Pa. Filed Oct. 11, 1962, Ser. No. 229,834 2 Claims. (Cl. 1122) This invention relates to an attachment for sewing machines to enable the sewing of patches, medallions, pockets and the like.

In the past, specially constructed machines have been required for the sole purpose of sewing patches, medallions and the like for mass production sewing of garments. These have had the outstanding disadvantage of requiring changing of the conventional cam and clamp built into the machine, requiring the construction of a new cam, each time a different design of patch or medallion was to be sewn, which added considerably to manufacturing costs.

An object of the present invention is to overcome the above-named disadvantage by providing an attachment for a conventional sewing machine so as to enable quick and easy change of the design of patch, medallion or pocket without the necessity of changing the cam or clamp built into the machine.

A more specific object of the invention is to provide a relatively simple attachment for selective sewing of different designs of patches, medallions,'pockets, etc. at a very high rate of speed so as to reduce manufacturing costs.

Other objects and advantages of the invention will be come more apparent from a study of the following description taken with the accompanying drawings wherein:

FIG. 1 is a perspective view of a conventional type sewing machine equipped with an attachment for sewing patches, medallions, pockets, etc. and embodying the principles of the present invention;

FIG. 2 is a fragmentary, perspective rear view of the apparatus shown in FIG. 1;

FIG. 3 is a fragmentary, perspective, rear view taken from the opposite side of that shown in FIG. 2; and,

FIG. 4 is a diagrammatic view illustrating overlapping during the sewing cycle;

FIG. 5 is a fragmentary perspective view of the presser foot taken opposite to the view shown in FIG. 1; and

FIGS. 6 and 7 are elevational views of the starting position and finish position, respectively, of the cam 8 and wedge a, the latter position including an overlap A that must be corrected by engagement of cam 8 and wedge 30a.

Referring more particularly to FIG. 1. of the drawing, numeral 1 generally denotes a sewing machine of conventional type, such as a No. 69 Class Singer, but which is provided with an attachment for sewing patches, medallions, pockets and the like. More specifically, numeral 2 denotes a shape of metal or other suitable material having a heart-like outline, or other desired shape to correspond to that of the medallion, patch or pocket to be sewn. Shape 2 is rigidly secured to, and is rotatable about, the axis of shaft or bar 4 which extends vertically. Shape 2 is yieldingly held, at all times, by pull spring 10, in contact with the presserfoot 5, which presserfoot forms a special part of the machine and through which the needle sews. Numeral 12 denotes the lifter bar which lifts the shape 2 by means of lifting collar element 12a as the presserfoot is raised and against the action of return spring 7 which tends to yieldingly hold the shape 3,182,615 Fatented May 1965 7 position, as shown in FIG. 6, and the job or work may be removed and replaced by another. Otherwise, because of the overlap A, the shape 2 would have a different starting position for each sewing operation.

Shaft 4 is driven by a driven timing pulley 14 which, in turn, is driven by a timing belt 16, driven by the driving timing pulley 18. Pulley 18 is driven by the sewing machine through a driving gear 20 driven by the sewing machine main shaft through an intermittent worm 36 and worm gear mounted on the shaft of gear 20. Gear 20 drives idler gear 22 which, in turn, drives gear 24 and pulley 18 rigidly secured thereto. Gear 22 is disengaged from gear 24 each time the machine is reset by engagement of resetting cam 8 and the male wedge on collar 30. Collar 30 is stationary.

An adjustable fram 26 is provided with suitable bolt and slot'connections to selectively tighten or loosen the timing belt 16.

Both the shape 2 and its driving assembly are pivotally moved towards and .away from the head of the machine by a main swing arm 28 which pivots about a swing arm axis or bar 32 extending vertically and mounted on the sewing machine. 7

A bar 34 is attached to the belt throw-out bar on the sewing machine and, during reset of shape 2, is used to disengage the idler gear 22 from the driven gear 24. Rod 38 is pushed by bar 34 and pivots the gear supporting block 38(a) about the axis of gear 20 so as to disengage gear 22 from driven gear 24.

It will be seen that when it is desired to sew a patch, medallion or pocket (the latter being sewn by less than one revolution of shape 2), this may be done by shape 2 and by pivotally swinging the arm 28 about the axis 32 while continually urging shape 2, by means of spring 10, in contact with presserfoot 5. When a different de-' sign of sewn shape is desired, this is accomplished simply by substituting a different shape 2 and without the necessity of changing the conventional cam and clamp in the sewing machine.

Thus it will be seen that I have provided an efficient sewing machine attachment for converting a conventional sewing machine for use in sewing medallions, patches or pockets and for easily and quickly changing the designs thereof without the necessity of changing the drive inside the machine; furthermore, I have provided a relatively simple and inexpensive attachment which enables the sewing of medallions, patches and pockets at a very high rate ofspeed so as to make it adaptable for large scale production.

While I have illustrated and described a single specific embodiment of my invention, it will .be understood that this is by way of illustration only, and that various changes and modifications may be made within the contemplation of my invention and within the scope of the following claims.

I claim:

1. In combination with a sewing machine having a drive shaft, a head and a vertically movable presserfoot extending downwardly thereof, a driven shaft extending parallel to and adjacent said presserfoot, an element shaped in the form of a patch to be sewn on a'garment and rigidly secured to the bottom of said shaft, pivotal means on which said driven shaft is journalled including spring means for urging said element into contact with said presserfoot and for swinging said driven shaft toward and away from said head of the machine, a driven pulley connected to said driven shaft, a driving pulley located on the opposite end of the sewing machine from said driven pulley, a belt connecting said driving pulley to said driven pulley, said driven pulley being driven by said sewing machine drive shaft, a return spring for yieldingly urging said driven shaft downwardly, and means for lifting said pivotal means and driven shaft against the action of said return spring.

2. Apparatus as recited in claim 1 comprising a worm, and an idling gear, and wherein said drive shaft is driven by said worm driven by said machine selectively through said idling gear.

References Cited by the Examiner UNITED STATES PATENTS Huestis 112203 Weis 112-2 Hand 112203 Daughters 11220 McDonald 11220 Roseman 1122 Abel 1122 Taketomi 112118 Clemens et a1 112-2 JORDAN FRANKLIN, Primary Examiner.

15 RUSSELL C. MADER, Examiner. 

1. IN COMBINATION WITH A SEWING MACHINE HAVING A DRIVE SHAFT, A HEAD AND A VERTICALLY MOVABLE PRESSERFOOT EXTENDING DOWNWARDLY THEREOF, A DRIVEN SHAFT EXTENDING PARALLEL TO AND ADJACENT SAID PRESSERFOOT, AN ELEMENT SHAPED IN THE FORM OF A PATCH TO BE SEWN ON A GARMENT AND RIGIDLY SECURED TO THE BOTTOM OF SAID SHAFT, PIVOTAL MEANS ON WHICH SAID DRIVEN SHAFT IS JOURNALLED INCLUDING SPRING MEANS FOR URGING SAID ELEMET INTO CONTACT WITH SAID PRESSERFOOT AND FOR SWINGING SAID DRIVEN SHAFT TOWARD AND AWAY FROM SAID HEAD OF THE MACHINE, A DRIVEN 